she overheated and vomited twice, losing both fluid and ions. After wards, she e
ID: 3506109 • Letter: S
Question
she overheated and vomited twice, losing both fluid and ions. After wards, she exhibited signs of a possible e following questions based on this situation: osmotic imbalance. Answer th a. Aftler vomiting, she was treated by local paramedics who gave her 500 ml of water to drink. By drinking the water did the firefighter increase or decrease her body osmolariy' b. At the end of the 12 hours and even after drinking the water, she continued to exhibit symptoms of a possible osmotic imbalance.'She was taken to the hospital where the measures shown on the chart below were determined. Fill in the remainder of the chart. (Be sure to include units.) Total body 30 liters ECF 10 liters ICF 20 liters Volume solute amount osmolarily 2600 mosmoles 260 mOsM c. Based on the information above, the firefighter is hyposmotic, isosmotic or hyperosmotic relative to norma d. The emergency room health care team disagrees about which IV solution to give the firefighter. Her osmolarity i low, and her body weight and blood pressure indicates that she is a little dehydrated (needs some fuid in cells). Refer to the list of IV solutions on page 156, Table 5-9. For a normal person, the table below shows how body osmolarity changes (increase, no change or decrease) and which way water moves when each IV fluid is added to the body. Normal person (OsM 285-295 mosM. isomotic to normal saline and to 5 % glucose) Water movement? IV Fluid 0.9% NaCl (normal saline) 0.45% NaCl 5% glucose in 0.45% NaCl 5% glucose in 0.9% NaCl Change in OsM? N/C N/C into ICF into ICF N/C Which IV fluid would you choose for the firefighter and why?Explanation / Answer
b. We know, Osmolarity = Solute amount/volume
using this equation, we can complete the table.
(ICF solute amount can be calculated by subtracting ECF from total solute amount)
c. Since, the osmolarity is less than normal value of 285-295 mOsM,
the firefighter is hyposmotic.
d. 5% glucose in 0.45% NaCl should be given.
It will both increase osmolarity and cause water movement into cells (as she is dehydrated).
Both of these actions are highly essential
Total Body ECF ICF Volume 30 litres 10 litres 20 litres Solute amount 7800 mosmoles 2600 mosmoles 5200 mosmoles Osmolarity 260 mOsM 260 mOsM 260 mOsMRelated Questions
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